MICHELIN hoses are made of butyl rubber, which gives them very low gas permeability and elastic behavior even at low temperatures.
Butyl tubes have good resistance to acids and bases, as well as very good resistance to weather and ozone. FOR RIM SIZE: 18 INCH FOR TIRE: 120/90 VALVE POSITION: CENTERED VALVE SHAPE: STRAIGHT Valve type: TR4 VERSION: REINFORCED THICKNESS: 4MM MATERIAL: RUBBER